Provision is made for the case where different units are used in Aqwa and the structural model. AqwaWave needs to know what the structural model length units are. You must supply this information in the AqwaWave data file (see SCAL command in Finite Element Program Information - FELM), if the units are not consistent between Aqwa and the structural FEM program.
Note: This scaling is only undertaken for the inputs to AqwaWave. The loads generated will always use the units associated with the hydrodynamic model, so they will need to be scaled when imported into the FEM program.